package com.hlkj.pay.app.merchant.ext.impl.yytpay.constant;

import java.io.*;
import java.net.HttpURLConnection;
import java.net.URL;
import java.util.Iterator;
import java.util.Map;
import java.util.UUID;

import javax.activation.MimetypesFileTypeMap;

/**
 * http 工具
 * 
 */
public class HttpFdfsUtils {
	/**
	 * 上传图片
	 * 
	 * @param urlStr
	 * @param textMap 表单参数
	 * @param fileMap 文件参数
	 * @param contentType 没有传入文件类型默认采用application/octet-stream
	 *            contentType非空采用filename匹配默认的图片类型
	 * @return 返回response数据
	 */
	@SuppressWarnings("rawtypes")
	public static String formUpload(String urlStr, Map<String, String> textMap, Map<String, InputStream> fileMap, String contentType) {
		String res = "";
		HttpURLConnection conn = null;
		// boundary就是request头和上传文件内容的分隔符
		String BOUNDARY = "---" + UUID.randomUUID().toString().replace("-", "");

		StringBuffer upFileName = new StringBuffer();
		BufferedReader reader = null;
		OutputStream out = null;
		try {
			URL url = new URL(urlStr);
			conn = (HttpURLConnection) url.openConnection();
			conn.setConnectTimeout(60000);
			conn.setReadTimeout(600000); // 上传5分钟
			conn.setDoOutput(true);
			conn.setDoInput(true);
			conn.setUseCaches(false);
			conn.setRequestMethod("POST");
			conn.setRequestProperty("Connection", "Keep-Alive");
			conn.setRequestProperty("User-Agent", "Mozilla/5.0 (Windows; U; Windows NT 6.1; zh-CN; rv:1.9.2.6)");
			conn.setRequestProperty("Content-Type", "multipart/form-data; boundary=" + BOUNDARY);
			out = new DataOutputStream(conn.getOutputStream());
			// text
			if (textMap != null) {
				StringBuffer strBuf = new StringBuffer();
				Iterator iter = textMap.entrySet().iterator();
				while (iter.hasNext()) {
					Map.Entry entry = (Map.Entry) iter.next();
					String inputName = (String) entry.getKey();
					String inputValue = (String) entry.getValue();
					if (inputValue == null) {
						continue;
					}
					strBuf.append("\r\n").append("--").append(BOUNDARY).append("\r\n");
					strBuf.append("Content-Disposition: form-data; name=\"" + inputName + "\"\r\n\r\n");
					strBuf.append(inputValue);
				}
				out.write(strBuf.toString().getBytes());
			}
			// file
			if (fileMap != null) {
				Iterator iter = fileMap.entrySet().iterator();
				while (iter.hasNext()) {
					Map.Entry entry = (Map.Entry) iter.next();
					String filename = (String) entry.getKey();
					InputStream inputValue = (InputStream) entry.getValue();
					if (inputValue == null) {
						continue;
					}

					if (!HttpFdfsUtils.isEmpty(filename) && HttpFdfsUtils.isEmpty(contentType)) {
						if (filename.endsWith(".png")) {
							contentType = "image/png";
						} else if (filename.endsWith(".jpg") || filename.endsWith(".jpeg") || filename.endsWith(".jpe")) {
							contentType = "image/jpeg";
						} else if (filename.endsWith(".gif")) {
							contentType = "image/gif";
						} else if (filename.endsWith(".ico")) {
							contentType = "image/image/x-icon";
						} else {
							// 没有传入文件类型，同时根据文件获取不到类型，默认采用application/octet-stream
							contentType = new MimetypesFileTypeMap().getContentType(filename);
						}
					}

					if (contentType == null || "".equals(contentType)) {
						contentType = "application/octet-stream";
					}

					upFileName.append(filename).append(" , ");

					StringBuffer strBuf = new StringBuffer();
					strBuf.append("\r\n").append("--").append(BOUNDARY).append("\r\n");
					strBuf.append("Content-Disposition: form-data; name=\"" + filename + "\"; filename=\"" + filename + "\"\r\n");

					strBuf.append("Content-Type:" + contentType + "\r\n\r\n");
					out.write(strBuf.toString().getBytes());
					DataInputStream in = null;
					try {
						in = new DataInputStream(inputValue);
						int bytes = 0;
						byte[] bufferOut = new byte[1024];
						while ((bytes = in.read(bufferOut)) != -1) {
							out.write(bufferOut, 0, bytes);
						}
					} catch (Exception e) {
						e.printStackTrace();
					} finally {
						if (in != null) {
							in.close();
						}
					}

				}
			}
			byte[] endData = ("\r\n--" + BOUNDARY + "--\r\n").getBytes();
			out.write(endData);
			out.flush();

			// 读取返回数据
			StringBuffer strBuf = new StringBuffer();
			reader = new BufferedReader(new InputStreamReader(conn.getInputStream()));
			String line = null;
			while ((line = reader.readLine()) != null) {
				strBuf.append(line).append("\n");
			}
			res = strBuf.toString();
		} catch (Exception e) {
			e.printStackTrace();
		} finally {
			if (conn != null) {
				conn.disconnect();
				conn = null;
			}

			if (reader != null) {
				try {
					reader.close();
				} catch (IOException e) {
					e.printStackTrace();
				}
				reader = null;
			}

			if (out != null) {
				try {
					out.close();
				} catch (IOException e) {
					e.printStackTrace();
				}
			}
		}
		return res;
	}

	public static boolean isEmpty(Object obj) {
		String strNull="null";
		if (obj == null || obj.toString().trim().length() == 0 || obj.toString().trim().equalsIgnoreCase(strNull)) {
			return true;
		}
		return false;
	}

	public static Object getObjOrEmpty(Object obj) {
		return obj == null ? "" : obj;
	}
}
